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"UN/NA numbers (the four digit number) found on bulk placards refer to specific chemicals or groups of chemicals and are assigned by the United Nations and/or the United States Department of Transportation." from http://environmentalchemistry.com/yogi/hazmat/placards/
Link also has a way to look up the numbers to find out what the cargo is. List is way too long to get into here.
What else can I help you with?
What does a spontaneously combustible placard stand for?
self heating or pyrophoric materials
What is a yellow placard with a number 2 on a truck?
It is a DOT hazardous materials placard indicating compressed oxygen.
What is the placard for propane?
The placard for propane is Class 2.1. It is a diamond-shaped placard with a red upper half and a lower half that is predominantly white, displaying the Class number and the UN identification number for propane.
Placard with a blast and number 1 on the bottom?
Explosives
The four digit identification number on the placard or orange panel is the?
This is the UN Identification Number.
What is the antonym for placard?
The word placard (noun meaning a sign, a notice, an advertisement) has no direct antonym; the closest would be 'without placard' or 'placard-less'.
What is a sentence for placard?
Someone has misspelled my name on this placard. A sandwich sign is a two-faced placard!
Is placard masculine or feminine?
In French, "placard" is masculine.
What are the four sections of the DOT placard?
symbol, UN hazard class number, color, UN identification number
What does a poisonous gas placard look like?
A poisonous gas placard typically features the hazard symbol for toxic chemicals, which is a skull and crossbones symbol. The placard may also include the UN number for the specific poisonous gas, as well as any additional information required by regulations. The placard is usually in a diamond shape and is orange with black symbols.
What is the highest degree of a hazard identified in the diamond on the NFPA placard?
The number 4 on the NFPA 704 placard indicates the highest hazard in any of the three categories (health, fire, reactivity).
Can you put placard in a sentence?
the placard have been posted everywhere.
